TY - JOUR
T1 - Effect of different light sources and guides on shear bond strength of brackets bonded with 2 adhesive systems
AU - Cacciafesta, Vittorio
AU - Sfondrini, Maria Francesca
AU - Barina, Erica
AU - Scribante, Andrea
AU - Garino, Francesco
AU - Klersy, Catherine
PY - 2005/7
Y1 - 2005/7
N2 - Introduction: This study assessed the effect of different light sources and light guides on the shear bond strength and failure site of orthodontic brackets bonded with 2 adhesive systems (Quick Cure [Reliance Orthodontic Products, Itasca, Ill] and Transbond XT [3M/Unitek, Monrovia, Calif]). Methods: Ninety bovine permanent mandibular incisors were randomly divided into 6 groups according to the adhesive system and light-curing procedure used. Each group consisted of 15 specimens; 90 stainless steel brackets were bonded to the teeth. Each adhesive system was light-cured with a halogen light (Ortholux XT, 3M/Unitek) for 20 seconds and the conventional light guide as controls. The remaining groups were cured with a halogen light (Ortho 2000 [Reliance Orthodontic Products, Itasca, Ill]) and a Power Slot light guide (Reliance Orthodontic Products) for 6 and 10 seconds. After bonding, all samples were stored in distilled water for 24 hours and then tested in a shear mode on a universal testing machine. Results: No significant differences in terms of bond strength values were found among the 6 groups, but significant differences in debond locations were found among the 6 groups tested. Conclusions: Power Slot light guides can be recommended as advantageous alternatives for fast-curing composite resins during orthodontic bonding.
AB - Introduction: This study assessed the effect of different light sources and light guides on the shear bond strength and failure site of orthodontic brackets bonded with 2 adhesive systems (Quick Cure [Reliance Orthodontic Products, Itasca, Ill] and Transbond XT [3M/Unitek, Monrovia, Calif]). Methods: Ninety bovine permanent mandibular incisors were randomly divided into 6 groups according to the adhesive system and light-curing procedure used. Each group consisted of 15 specimens; 90 stainless steel brackets were bonded to the teeth. Each adhesive system was light-cured with a halogen light (Ortholux XT, 3M/Unitek) for 20 seconds and the conventional light guide as controls. The remaining groups were cured with a halogen light (Ortho 2000 [Reliance Orthodontic Products, Itasca, Ill]) and a Power Slot light guide (Reliance Orthodontic Products) for 6 and 10 seconds. After bonding, all samples were stored in distilled water for 24 hours and then tested in a shear mode on a universal testing machine. Results: No significant differences in terms of bond strength values were found among the 6 groups, but significant differences in debond locations were found among the 6 groups tested. Conclusions: Power Slot light guides can be recommended as advantageous alternatives for fast-curing composite resins during orthodontic bonding.
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U2 - 10.1016/j.ajodo.2004.12.015
DO - 10.1016/j.ajodo.2004.12.015
M3 - Article
C2 - 16027632
AN - SCOPUS:22244443337
VL - 128
SP - 99
EP - 102
JO - American Journal of Orthodontics and Dentofacial Orthopedics
JF - American Journal of Orthodontics and Dentofacial Orthopedics
SN - 0889-5406
IS - 1
ER -